CDS Syllabus Details – UPSC Combined Defence Services Examination

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The Union Public Service Commission (UPSC) conducts the Combined Defence Services (CDS) Examination for recruitment into the following academies:

  • Indian Military Academy (IMA)
  • Indian Naval Academy (INA)
  • Air Force Academy (AFA)
  • Officers Training Academy (OTA)

Below is the detailed syllabus for the CDS Examination.


The English paper is designed to test the candidate’s understanding of the language, grammar, and vocabulary. It evaluates:

  • Comprehension ability
  • Workmanlike use of words
  • Sentence formation
  • Synonyms and antonyms
  • Fill in the blanks
  • Spotting errors
  • Sentence improvement
  • Para jumbles

The General Knowledge paper tests the candidate’s awareness of current events, general science, and historical and geographical knowledge. The syllabus includes:

  • Current Affairs – National and international events, government schemes, and important personalities
  • History of India – Ancient, medieval, and modern history, including freedom movements
  • Geography – Indian and world geography, including physical and economic aspects
  • General Science – Basic physics, chemistry, and biology concepts relevant to daily life

1. Arithmetic

  • Number System – Natural numbers, integers, rational and real numbers
  • Basic Operations – Addition, subtraction, multiplication, division
  • Square Roots and Decimal Fractions
  • Unitary Method – Time and distance, time and work
  • Percentages – Applications in simple and compound interest
  • Profit and Loss, Ratio and Proportion, Variation
  • Division Algorithm – Prime and composite numbers
  • Divisibility Rules – Tests for 2, 3, 4, 5, 9, and 11
  • Multiples and Factors – Factorization theorem
  • HCF and LCM – Euclidean algorithm
  • Logarithms – Base 10, laws of logarithms, and use of logarithmic tables
  • Basic trigonometric functions: sine (sin), cosine (cos), tangent (tan)
  • Values of sin, cos, and tan for angles 0°, 30°, 45°, 60°, and 90°
  • Trigonometric identities
  • Use of trigonometric tables
  • Simple applications of heights and distances
  • Lines and Angles – Basic properties
  • Plane Figures – Theorems on:
    • Properties of angles at a point
    • Parallel lines
    • Sides and angles of a triangle
    • Congruency and similarity of triangles
    • Medians and altitudes of a triangle
    • Properties of quadrilaterals (parallelogram, rectangle, square)
    • Circle properties including tangents and normals
    • Locus problems
  • Areas of basic geometric shapes:
    • Squares, rectangles, parallelograms, triangles, and circles
  • Surface area and volume of:
    • Cuboids, right circular cones, cylinders, and spheres
  • Applications in real-world field measurements
  • Collection and Tabulation of Data
  • Graphical Representation:
    • Frequency polygons
    • Histograms
    • Bar charts
    • Pie charts
  • Measures of Central Tendency – Mean, median, and mode

Click Here For Exam Pattern of CDS

Click Here For Elligibility Criteria

Click Here For CDS Selection Process


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